South Park Season 16 Episode 1 Reverse Cowgirl Episode Title:Reverse Cowgirl.Episode Description:Clyde Donovan unintentionally leaves the toilet seat up, causing his mother, Betsy, to punish him in front of Stan, Kyle, Cartman and Kenny. This embarrasses Clyde, who asks the guys not to tell anyone. Cartman none the less tells the entire class the next day, while Butters is dumbfounded to learn that everyone sits on the toilet facing away from the tank, as he has been sitting facing it, in order to use the tank as a shelf for reading material and drinks.